Cnidaria is a phylum within Kingdom Animalia which consists of hydras, jellies (or jellyfish), sea anemones, and corals. All cnidarians are radially symmetrical, and there are two main radially symmetrical body types.
The stock market crash, on black Tuesday (October 29, 1929) began the Great Depression.
Black Sunday, April 14, 1935, a day when winds reached top speeds of 60 miles per hour, prompted an AP reporter to coin the term âdust bowlâ for the first time. The agricultural depression was a major factor in the Great Depression, as bank loans went bad, credit dried up, and banks closed across the country.